Laterally-movable detector in loom transferrer



4s 15:2 1? al Aug; 23, v 1 K. J. UNwlN LATERALLY MOVABLE DETECTOR y1NLOOM 'TRANSFERRER Filed Deo. 27: 1926 a convenient.embodiment of myinvention is Y. u

` tion with the .lug'2'f orsoine other portion Patented Aug. 23, 1927.

: nairsnsra'rss PATENT OFFICE KENNETH J. UNWIN, or WORCESTER,MAssAcI-ISETTS," Assreivon'ro cRoMrToN &,

KNOWLES MASSACHUSETTS.

WORCESTER, MASSACHUSETTS, AHCORPORATION OF LATERALLY-MOVABLE nETEc'ron1N toom TRANSEERRER.

Application filed December 27, 1926. Serial No. 157,077;

l. g This invention relates to weft ldetectors of the type mounted inregularly movingtrans ferrer arms and it is the principal object oftheinvention to provide a detector lmovable i laterally with respect toits indicating side slipping movement.

In detectors o f the `type set forth in patent lduring the movement ofthelay to abrasion of the yarn.

cause It is an important object of my present invention to' provide adetector supported by but loosely fitted tothe transferrer and held in apredetermined position which will yiel move with the by a llightresilient device d to permit the detector to bobbin as the'lay advances.

The supporting pivot of the detectory preferably extends through a slotin said de tector of a width substantially equal to the diameter of theIt is a more pivot but of a greater length. particular object of myinvention to provide the detector with a concave weft engaging surfaceto facilitate the movement with the weft and to insure movement of thedetector againstthe light resilient device.

Viththese and other objects which will appear Vas Y vention relates thevdescriptionproceeds, my intol the arrangements and Y'combinations ofparts hereinafter set forth,

and more parti claims.

cularly pointed out in the' In the accompanying drawings, wherein shown,Fig. V1 is a verticalr central vsection through Y the detector havingbeen moved to indicatingtact with an exhausted' sup- `l n l H A arm isbrought downon each detecting beatv shown in non-indicating vpositionand inv contact with-an abundant supply of weft, Fig. 2 isa view similarto Fig. 1 with position byl con ofvFigJ 1, and

y5-5of Fig; 3.

- Referring tothe drawings, a transferrer arm 10 has a bobbin buttengaging heel 11 and a yarn engaging tip 12 and islalso pro- -vided witha pair of spaced parallelvertical walls 13 between -wh-icheXtend a web14. E

A. plunger 15 is mounted for sliding horizontal` movement iii a portionof the transferrer arm and passes through saidweb 14.

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v lie plunger'is vsurrounded in partv by compression spring 16 whichlies between the head of the plunger and the web and V'tends normally tomove said .plunger to the right from the position shown in Fig. 1. I Alatch 17 pivotedas at 18 to the transferrer arm has a hook 19 to engagea notch y.20 `of the plunger and holds the latter in tlieposition shownin Fig. 1. A torsion spring 21 A'surrounds the studv 18 and has oiieendthereof in Contact with thetransi ferrer arm as at 22 and the other endin contact with the latch as at 23, said torsion spring tending to holdthe latch in position with the hooki19 in the notch 20. A Cotter pin 24in the plunger engages the web 11 to limit outward'movement of theplunger.

The detectorv supporting memberincludes a lever 25 pivoted yas at 26 tothe transferrer arm 'and having one end extended and provided vwith alug A27 for engagement with a yielding trip 28. A light tension spring,29

interposed between thelever and the transferrer arm holds said lever innormal posiofthe lever 25 in contact with the transferrer arm... Y y vThe weft detecting elementv comprises a 4detector BOsupported by thelever 25 andl a tension spring 31 interposed :between the detectorandthe lever 25holds Lsaid detector inV .A

normal position relatively` yto said lever,

screw 32 permitting slight adjustment.

Under normal conditions the transferrer 'oi' the loom "so that"*tllew'deteetor' rom rubbing alongVv mdeisioe fot-i'ihe'V l presentedto the yarn Carried by the bobbin detector. lt Will further be seen thatthe 5 when the vve'ft` it is normally held yieldingly inonep'osileteetor y rfyv p with res-peet y *agemenn to tneegpa rotorowednytieroofbbinlifasothelfi H--tothe *posi same niowv es bathandfoltlixiirtlle looiir.; Y

Having tllfis describedfinyinveiition it'vvill y el is lfi'gf.'Thematter time'k y Y i n lilVY e; VVVlledni the be substantially thesame as that set forth ,y lout Y leparting fromthe spirit and in theaforesaid patent to RyomV the trip scope of theV invention," and "I donot Wish to 'ndioflf lndottedl t2 l t lt il -l t 'ish lisolosedwbnt fleasing the plung to moveto 'the 1nd V l Vl-.71mavrei@`.Ldeteetingmeehanisinfor aVV ,Y ,i y y y n y it respect to thecarrier lever and 1n carrying ifeot l provide said ydek i.

y n .l y 1 Y t e lattei, a.deteotor having aloo'sepivotal oon- HGCHOHwill renie@ t0.Ythestmmerter:am,

l'fnhn i y, .hnlrliameten o Ys NL41- arri v Y25,'so,.that-saiddetecte'--mayhav fingfm fable! 'transfT K e Y ,ljhtostveling haovemeiitfxv thfresp`V .f trans ,er eifarming( dn yetonsi taially its support. The lower end or' the detector parallel to 'the pathofthe weft,` and against is formed oonoavely as shown at 42 in Fig. theaction of said resilient means. l

ln Offlertvlilflthe detector@ @lowest Ale, eeft.,detecting insediamenti@r9.5 ,y ateral positionl provide ,a lighty Wirespring Y loom having@Supply of WQtlmovabImmCk 43 secured by set screw 44 to a portion oi Yand forth therein and a transferrer arm y the Vtransferreruvarnm n Saidspring i disf movable towardH the "sup of Wei-ft, 'inay posed asshownmore"partionlarly in v. hsv cti` mentlotthe 'e Yw'ixndftends-fnermallyfteheld the detector-m il' "fri-ier"'movabiy'n`mtedoirthe WOW 11444:thefipositien :shoe-.vn inLVFig. Y f E1n,-ae-deteetereloosely oivotedVV e VVVtendencyto move the detector' to giveaY to the Ycarrier to have a movement inA the "ielsefindi tion. dal ngty llien'thede y 'indi w, y Y, y, y Y o e y gr Y, i

40 into engagement with the bobbin the latter movement With res )ect tothe transferrer 105 will be a short distanceJ trom front center arm, andresilient. means normally holding TH m, .mm y y l ,Y f F yHresper't toVn trame n H lli ll lfl Y n l detecting mechanism for a loom having asupply of weft movable Iback 110 1V C a renarn' y y y M; y y y y im: nthe bobbin', tends to keep the deteotor in the direction. transverse toementofvthe l same 'relative position with respect to the lili-ter, V21WGft'ClGeCtOP loosely mounted lWith lgtrtgdrlne 'espeotwtoutlsterrerjarmto halveoa 1715 ation of.thelerjgt-lljiMm ine surface o ne'deter-,ted and also vay limited Ymovement in the 'd' e "on inf WhichtheV ive'ttavelsacl and ortniiithe -'lodin;'endeY 1 1 ioi'i'ei 'aim i eS b ,b

l C tor is ontfofoonta'ct with the bobbin and the to be detected andassist in moving said de- -liolt spring Willmrestore rthe detesto1km`toits f'k'lly Gf th@,liflllL irl"ti-ansvei efposf 'ion relai, olthe; i"de tmgmfiechanismor ,a1251 6W transferrer arm shown in full lines ofFig.. 3. upply of weft movablebaok l From the' `foregoing it Will beseen that I and 'forth therein and a-transferrer armmovhave provid-edmoans' for permittin the deable tov itt ina directionl Lettertoieiiahwiii" JhtPsame/iel' "osl time Vs ,r ,y latte-i; a Y f Y tienwith respect Ytotherlbobbin y:asthensamemweftdeteetrlooselymountedwithrespeette H1370 f- G5 kmoves forwardly, thuspreventing the bobbinv the transferrer arm to have a movement 'in theslotted 3. In a weft or sorrise,y against the pressureynorinally'l'e'xerted "by 'springy 43 but the latter is Ylight m' y l l"ig'innolr VYoe ds Wit out ott the direction of the length of thesurface to the transferrer arm, and resilient means be detected and alsoa limited movement in tending to resist transverse movement of the thedirection in Which the Weft travels back deteotorjrelatively to thetransferrer arm. and forth in the loom, a concave yarn en- In testimony'whereof I have hereunto v 5 gagging face for the detector toliaveengageaixed my signature.

ment with the surface to be detected' and y assist in moving Saiddetector transverse of KENNETH J. UNWIN.

